Subtract 70/18 from 8/9
1st number: 8/9, 2nd number: 3 16/18
8/9 - 70/18 is -3/1.
Steps for subtracting fractions
- Find the least common denominator or LCM of the two denominators:
LCM of 9 and 18 is 18
Next, find the equivalent fraction of both fractional numbers with denominator 18 - For the 1st fraction, since 9 × 2 = 18,
8/9 = 8 × 2/9 × 2 = 16/18 - Likewise, for the 2nd fraction, since 18 × 1 = 18,
70/18 = 70 × 1/18 × 1 = 70/18 - Subtract the two like fractions:
16/18 - 70/18 = 16 - 70/18 = -54/18 - After reducing the fraction, the answer is -3/1
MathStep (Works offline)
Download our mobile app and learn to work with fractions in your own time:
Android and iPhone/ iPad
Related: 16/9-70/18 8/18-70/18 8/9-70/36 24/9-70/18 8/27-70/18 8/9-70/54 40/9-70/18 8/45-70/18 8/9-70/90 56/9-70/18 8/63-70/18